Tyan Thunder n6550EX compatible Black Diamond memory 2GB DDR2 ECC Registered RDIMM 533MHz. Compatible computer model: Tyan Thunder n6550EX, n4250QE S4985G3NR-SI, h2000M S3992G3N-E, h1000E S3970G2NR, n3600M S2932-SI S2932WG2NR-SI, n3600M (S2932) S2932G2NR-SI, n3600S S2933G2NR-B, n3600QX S4987WG2NRI2, h1000E S3970G2NR-RS. Black Diamond Memory offers the most extensive line of memory solutions today. With our decades of experience specializing in memory, Black Diamond Memory is a proven manufacturer to the semiconductor industry. Our great products combined with our world class service and support have helped us to where we are today. When you have an Black Diamond memory chip, you can count on it being the best available memory for your system. Our system specific Branded Memory line delivers in performance, and is designed to be guaranteed in compatibility with your system. Each of our memory chips come with a lifetime warranty for your peace of mind. Use our Upgrade Configurator to easily find the correct memory module for your system. Please keep in mind that this memory will ONLY work on the models listed above. 15% Restocking fee will apply for non-defective items.